General description 20-piece assortment of 4.5 inch (114 mm) diameter sanding discs with a grit of 60. These high-quality resin bonded aluminum oxide abrasives provide excellent performance, featuring durability, good abrasion resistance, and anti-static properties that prevent clogging. Technical specifications Diameter: 4.5 inch (114 mm) Grit: 60 Shank size: 7/8 inch (22.2 mm) Maximum RPM: 17,000 Compatibility and accessories Compatible with most air and electric grinders, including: DEWALT DCG414B DWE402 Makita 9557PBX1 Bosch 1375A GWS8-45 PORTER-CABLE PC60TAG PCE810 Black & Decker BDEG400 G950 Usage Ideal for a wide range of applications, including: Rust removal Paint stripping Working on iron and stainless steel Non-ferrous metals Wood and plastics